Access code processing for a security system
US5907288A · kind A · utility
Inventors
Key dates
| Filing date | May 15, 1997 |
| Grant date | May 25, 1999 |
| Priority date | — |
| Expiry date | May 15, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/33
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A security system includes a control panel for controlling the operation of the security system and a keypad for communication with the control panel by entry of access codes by key-presses of keys on the keypad of the keypad controller. The control panel includes a means for examining a sequence of key-presses for a match between a first defined number of consecutive key-presses and access codes programmed in the control panel. The control panel examines the sequence of key-presses after a second defined number of key-presses and if no match is found, continues to examine the most recent first defined number of key-presses after each further individual key-press until a match is found.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.